Plate and sheet furnace



(No Model.)

.H. WHITELEY. PLATE AND SHEET FURNACE.

No. 586,300. Patented July 18,1897.

Inventor.

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UNITED STATES PATENT ()FFICE.

HENRY IVHITELEY, OF PHILADELPHIA, PENNSYLVANIA.

PLATE AND SHEET FURNACE.

SPECIFICATION forming part of Letters Patent No. 586,300, dated July 13, 1897.

Application filed April 6,1897- Serial No. 630,988. (No model.)

To aZZ whom it may concern:

Be it known that I, HENRY \VHITELEY, a citizen of the United States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in Plate and Sheet Furnaces, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to the construction of furnaces particularly adapted for use in rolling-mills where sheet-iron is made and intended for heating the plates and the partially-rolled sheets.

The object of my invention is especially to provide for an even distribution of heat in the part of the furnace in which the sheets are reheated, and the nature of my improvements will be best understood as described in connection with the drawings, in which they are illustrated, in which Figure 1 is a plan view taken on the section-line 1 l of Fig. 2 of my improved furnace. Fig. 2 is an elevation taken on the section-line 2 2 of Fig. 1 of the furnace. Fig. 3 is a cross-sectional view taken on the section-line 3 3 of Fig. 2; and Fig. 4 is a sectional View of the take-off flues, taken on the section-line at 4 of Fig. 2.

A is the fire-chamber of the furnace,which may be of any desired construction and which is separated from the plate-heating chamber B by a wall D, B indicating the opening into the chamber B, through which the plates are inserted and removed.

0 is the sheet-heating chamber and is provided with a series of upwardly-extending parallel ridges E E E, 850., extending longitudinally through the furnace-chamber and forming a support upon which the sheets rest, and also a series of parallel open-topped flues, (indicated at G G, doc.)

H H H H H H are offtake-flues formed at the bottom of the tines G G, 850., and at their ends farthest removed from the firechamber, and instead of letting these fluepassages H H, &o., open into a common takeoif flue I provide separate flues I and J J, into which the said dow'ntake-flues or passages H H, &c., open, the said offtake-flues I and J J communicating finally with the common flue K, which leads to the stack. The flue I is separated from the flue J J by walls L and L and preferably I continue the wall L beyond the wall L as indicated at L, the object of this construction being that the gases passing from one group of fines, for instance H, H, and H shall be kept entirely separate from the gases passing down through the other group of flue-passages H H and H and not only so, but that the draft in the offtake-fiues shall tend to draw the gases through the first group of doWntake-flues in the opposite direction from that in which the gases from the second group of downtakeflues are drawn. The result of this construction is to make a substantially uniform draft through the whole series of fines G G, 850., overcoming a tendency which in similar furnaces has been found to exist for the furnacegases to pass toward one corner of the furnace, and of course this equalizing of the draft through the furnace extends as well to the gases which pass through the upper portion of the chamber 0 as to those which pass through the lines G.

I prefer to construct the chamber 0 with a bridge-wall F, mounted on top of the ridges E at the end nearest to the fire-chamber, so that those portions of the gases which pass to the top of the chamber 0 will not impinge directly upon the ends of the sheets, but will, after passing over the bridge F, impinge with a downward motion upon the sheets.

The sheets are introduced into the chamber 0 through the opening 0, and in the chamber 13, I have shown a series of piles M M M, indicating plates in position to be heated, while N indicates a pile of sheets being treated in the chamber 0.

Having now described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. In a furnace the combination with a firechamber A of a sheet-heating chamber 0, a series of parallel ridges E extending longitudinally through the sheet-heating chamber to form a support for sheets and parallel opentopped flues G, a series of fines H H 850., one opening from the bottom of each of the fines G at their ends farther from the fire-chamber and separate fines I and J J situated beneath the bottom of the furnace into which fines H H &c., open.

2. In a furnace the combination With a firechamber A of a sheet-heating chamber 0, a series of parallel ridges E extending longitudinally through the sheet-heating chamber to form a support for sheets and parallel opentopped flues G, a bridge-Wall F supported on top of the ridges G and a series of fines H H the. opening from the bottom of fines G at their ends farthest from the fire-chamber.

3. In a furnace the combination with a firechamber A of a sheet-heating chamber 0, a series of parallel ridges E extending longitudinally through the sheet-heatin g chamber to form a support for sheets andparallel opentopped fines G, a bridge-wall F supported on top of the ridges G, a series of fines H H &c., opening from the bottom of fines G at their ends farthest from the fire-chamber and separate fines I and J J situated beneath the bottom of the furnace into which flues H II &c., open.

4. In a furnace the combination with a firechamber A of a platerheating chamber B, a

sheet-heating chamber 0, a series of parallel ridges E extendinglongitndinally through the sheet-heating chamber to form a support for vsheets and parallel open-topped fines G, a series of flues H H 850,, opening from the bot tom of fines G at their ends farthest from the fire-chamber and separate fines I and J J situated beneath the bottom of the furnace into which fines H H &c., open.

5. In a furnace the combination with a firechamber A of a plate-heating chamber B, a.

sheet-heating chamber 0, a series of parallel' HENRY \VHITELEY.

IVitnesses:

A. L. FOSTER, \V. B. SPEAK, Jr. 

